US8308346B2 - Lever escapement for a timepiece - Google Patents

Lever escapement for a timepiece Download PDF

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Publication number
US8308346B2
US8308346B2 US12/602,011 US60201108A US8308346B2 US 8308346 B2 US8308346 B2 US 8308346B2 US 60201108 A US60201108 A US 60201108A US 8308346 B2 US8308346 B2 US 8308346B2
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Prior art keywords
wheel
impulse
lever
escape wheel
teeth
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US12/602,011
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US20100182879A1 (en
Inventor
Thierry Conus
Andres Cabezas Jurin
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Omega SA
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Omega SA
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design

Definitions

  • the invention relates to a lever escapement for a timepiece that includes an escape wheel set, driven by a gear train, a balance roller carrying an impulse pin and fitted with a first impulse pallet stone arranged for cooperating with the teeth of the wheel set and a lever articulated on a pivot and fitted with a fork that cooperates with the impulse pin, wherein the lever is fitted with a second impulse pallet stone arranged for cooperating with the teeth carried by the wheel set and first and second locking pallet stones arranged for cooperating with the teeth carried by the wheel set.
  • one escape wheel set is given the dual function of receiving motion from the gear train and contributing to at least one of the escapement functions.
  • the George Daniels system only provides an indirect impulse function and it will be clear that any other function attributed to this wheel set, apart from the aforementioned function, constitutes a novelty for this type of escapement.
  • FIG. 1 is a plan view of a particular embodiment of the present invention.
  • FIGS. 2 to 13 are plan views explaining the operating phases peculiar to escapements of the type mentioned in the preamble of this description and which thus also apply to the escapement of the present invention.
  • the operating phases shown cover one complete oscillation of the balance roller.
  • FIG. 1 is a plan view of the escape mechanism according to a first embodiment of the invention.
  • This escapement includes an escape wheel set 1 driven by a gear train 2 and a balance roller 3 (the balance is not shown) carrying an impulse pin 4 .
  • escape wheel set 1 rotates in the direction of arrow 30 , driven by gear train 2 , which rotates in the direction of arrow 31 .
  • Roller 3 is fitted with a first impulse pallet stone 5 , arranged for cooperating with the teeth 6 of wheel set 1 .
  • the escapement also includes a lever 8 , articulated on a pivot 9 and fitted with a fork 10 that cooperates with impulse pin 4 of roller 3 .
  • This lever is fitted with a second impulse pallet stone 11 , arranged for cooperating with the teeth 6 of wheel set 1 , and first and second locking pallet stones 12 and 13 , arranged for cooperating with the teeth 6 of wheel set 1 .
  • the fork 10 is fitted with a guard pin 24 , which prevents lever 8 from accidentally tipping.
  • the impulse pin 4 concerned here may be a sapphire or steel part added to roller 3 , as is the case in escapements of the prior art.
  • the impulse pin may be integral with the roller on which it is mounted, or even form part of an element that has a particular shape and is secured to the roller.
  • the invention is not limited to this type of embodiment, since the pallet stones may be integral with the lever or roller respectively.
  • wheel set 1 has a single escape wheel 1 and its teeth 6 mesh directly with gear train 2 and more specifically with the gear train teeth 20 .
  • This gear train or going train is in fact all of wheels and pinions which transmit the drive force from the barrel to escape wheel 1 .
  • the gear train 2 illustrated here is the last wheel of the series often called the fourth wheel or second wheel. In a conventional movement, this fourth wheel meshes directly with the escape pinion that does not exist in the present invention.
  • FIG. 1 of the present invention shows that it is possible to replace the escape wheel of the aforecited document by the escape wheel of the invention, in a particular configuration, such that it can be directly driven by gear train 2 at the same time that it fulfils all the escape functions, i.e. it cooperates with the two impulse pallet stones 5 and 11 and the two locking pallet stones 12 and 13 . It will be clear that the design proposed takes an extremely small amount of space heightwise and it is economical in terms of the number of parts involved.
  • FIGS. 2 to 13 The operation of the escapement according to the invention will now be explained with reference to FIGS. 2 to 13 .
  • the lever escapement for a timepiece illustrated in these Figures includes two escape wheels 14 and 15 .
  • the operating principle of this escapement is the same as that of the present invention.
  • One complete oscillation of roller 3 is illustrated in FIGS. 2 to 13 and the various operating phases will be analysed below.
  • roller 3 is rotating in the direction of arrow 30 .
  • the escape wheel set 1 is locked, retained by the locking pallet stone 12 , which is abutting on tooth 40 of first wheel 14 .
  • the tail 23 of lever 8 is abutting on banking pin 21 .
  • Impulse pin 4 of roller 3 has penetrated the empty space in fork 10 and entered into contact with one tooth of the fork. This is the start of the unlocking phase of locking pallet stone 12 .
  • roller 3 continues to rotate in the direction of arrow 30 causing lever 8 to pivot in the direction of arrow 32 .
  • This pivoting brings locking pallet stone 12 to the end of tooth 40 of wheel 14 causing it to exit the hold of that tooth. This is the release phase of escape wheel set 1 .
  • roller 3 has led its first impulse pallet stone 5 to intersect the trajectory of tooth 50 of first wheel 14 forming escape wheel set 1 .
  • escape wheel set 1 is released and rotating in the direction of arrow 30 , actuated by gear train 2 whose last wheel is rotating in the direction of arrow 31 .
  • the teeth of first escape wheel 14 mesh directly with the teeth of the last wheel of gear train 2 , in this case, tooth 20 is driving tooth 41 of wheel 14 .
  • Tooth 50 of wheel 14 has caught up with impulse pallet stone 5 secured to roller 3 , then entered into contact therewith. This is a start of impulse phase for relaunching roller 3 .
  • FIG. 5 shows the end of impulse phase.
  • Escape wheel set 1 rotating in the direction of arrow 30 , has brought tooth 50 of wheel 14 into the position shown in the Figure, i.e. on the point of letting go of impulse pallet stone 5 .
  • roller 3 has continued to drive lever 8 in the direction of arrow 32 , via impulse pin 4 , which consequently causes second locking pallet stone 13 to intersect the trajectory of tooth 49 of first wheel 14 , thus preparing for the first lock.
  • FIG. 6 shows the lock of tooth 49 of first wheel 14 on locking pallet stone 13 .
  • Roller 3 continues its rotation in the direction of arrow 30 and impulse pin 4 is on the point of exiting fork 10 .
  • FIG. 7 shows the escapement of the invention in a state of total lock.
  • locking pallet stone 13 has moved deeper onto tooth 49 of first wheel 14 and the tail 23 of lever 8 is abutting on banking pin 22 .
  • roller 3 describes its supplementary arc along the direction of arrow 30 , and then reverses its direction and turns back along the direction of arrow 33 . This phase marks the end of the first vibration of the oscillation being examined.
  • FIG. 8 shows a lever 8 in the same situation as that analysed above.
  • roller 3 returning in the direction of arrow 33 , causes impulse pin 4 to come into contact with fork 10 of lever 8 .
  • roller 3 has continued its travel in the direction of arrow 33 and, via impulse pin 4 and fork 10 , has driven lever 8 in the direction of arrow 34 .
  • Tail 23 of lever 8 has become detached from banking pin 22 and locking pallet stone 13 has been released from the hold of tooth 49 of first wheel 14 .
  • This is a release phase of wheel set 1 .
  • roller 3 has caused the second impulse pallet stone 11 , carried by lever 8 , to intersect the trajectory of tooth 48 of the second escape wheel 15 forming escape wheel set 1 , thus preparing for the next impulse.
  • escape wheel set 1 has been released and is rotating in the direction of arrow 30 , actuated by gear train 2 , as was explained above. Tooth 48 of second wheel 15 has caught up with impulse pallet stone 11 then entered into contact therewith. This is again a start of impulse phase for relaunching roller 3 .
  • FIG. 12 shows the hold of tooth 47 of the first wheel 14 on locking pallet stone 12 .
  • Roller 3 continues its rotation in the direction of arrow 33 and impulse pin 4 is on the point of leaving fork 10 .
  • FIG. 13 shows the escapement of the invention in a state of total lock.
  • locking pallet stone 12 has moved more deeply onto tooth 47 of first wheel 14 and tail 23 of lever 8 is abutting on banking pin 21 .
  • roller 3 describes its supplementary arc along the direction of arrow 33 then reverses its direction and turns back along the direction of arrow 30 .
  • This phase marks the end of the second vibration of the oscillation under examination. From this moment a new cycle begins and we return to the starting situation, i.e. that shown in FIG. 2 .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Gears, Cams (AREA)
  • Electromechanical Clocks (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Switches With Compound Operations (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Dowels (AREA)
  • Piles And Underground Anchors (AREA)
  • Table Equipment (AREA)
US12/602,011 2007-05-30 2008-05-15 Lever escapement for a timepiece Active 2029-04-06 US8308346B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP07109193A EP1998236B1 (de) 2007-05-30 2007-05-30 Ankerhemmung für Uhren
EP07109193 2007-05-30
EP07109193.8 2007-05-30
PCT/EP2008/055984 WO2008145539A1 (fr) 2007-05-30 2008-05-15 Echappement a ancre pour piece d'horlogerie

Publications (2)

Publication Number Publication Date
US20100182879A1 US20100182879A1 (en) 2010-07-22
US8308346B2 true US8308346B2 (en) 2012-11-13

Family

ID=39031012

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/602,011 Active 2029-04-06 US8308346B2 (en) 2007-05-30 2008-05-15 Lever escapement for a timepiece
US12/130,487 Active US7661874B2 (en) 2007-05-30 2008-05-30 Lever escapement for a timepiece

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/130,487 Active US7661874B2 (en) 2007-05-30 2008-05-30 Lever escapement for a timepiece

Country Status (10)

Country Link
US (2) US8308346B2 (de)
EP (2) EP1998236B1 (de)
JP (2) JP5221649B2 (de)
KR (1) KR20080106040A (de)
CN (2) CN101711378B (de)
AT (1) ATE475913T1 (de)
DE (1) DE602007008077D1 (de)
HK (2) HK1127969A1 (de)
SG (1) SG148134A1 (de)
WO (1) WO2008145539A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120113764A1 (en) * 2010-11-04 2012-05-10 Nivarox-Far S.A. Synchronous escapement for a timepiece mechanism
US20120124797A1 (en) * 2007-12-27 2012-05-24 Chopard Technologies Sa Horological movement comprising a high oscillation frequency regulating device
WO2013159117A1 (en) 2012-04-20 2013-10-24 SlipChip, LLC Fluidic devices and systems for sample preparation or autonomous analysis
US9808798B2 (en) 2012-04-20 2017-11-07 California Institute Of Technology Fluidic devices for biospecimen preservation
US20180231936A1 (en) * 2015-08-25 2018-08-16 Citizen Watch Co., Ltd. Escapement for timepiece

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1396734B1 (it) * 2009-11-25 2012-12-14 Ferrara Scappamento per orologeria ad alto rendimento.
EP2407830B1 (de) * 2010-07-15 2014-11-05 Rolex Sa Uhr
EP2595005A1 (de) * 2011-11-16 2013-05-22 Omega SA Einteilige Triebfeder für eine Uhr
JP5891076B2 (ja) * 2012-03-09 2016-03-22 セイコーインスツル株式会社 がんぎ歯、該がんぎ歯を備えたがんぎ車、アンクル脱進器、ムーブメント、並びに機械式時計及びトルク伝達方法
CH706274B1 (fr) * 2012-03-29 2016-12-15 Nivarox Far Sa Mécanisme d'échappement horloger comprenant un mécanisme flexible monobloc pour la transmission d'impulsions entre le balancier et la roue d'échappement.
EP2730980B1 (de) * 2012-11-09 2018-08-29 Nivarox-FAR S.A. Uhrmechanismus zur Begrenzung oder Übertragung
CH707862A2 (fr) * 2013-04-03 2014-10-15 Detra Sa Dispositif d'échappement pour mouvement d'horlogerie.
JP6210535B2 (ja) * 2013-07-25 2017-10-11 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
JP6347439B2 (ja) * 2014-03-06 2018-06-27 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
JP6206877B2 (ja) * 2014-03-06 2017-10-04 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
WO2016001740A2 (en) * 2014-07-03 2016-01-07 Preciflex Sa Clockwork mechanisms for double accumulation and power transmission dedicated mono-conrolled movement
CN106707718B (zh) * 2017-03-01 2019-01-29 谭泽华 钟表分轴冲击擒纵器
JP6901877B2 (ja) * 2017-03-13 2021-07-14 セイコーインスツル株式会社 脱進機、時計用ムーブメント及び時計
KR102621896B1 (ko) * 2017-07-04 2024-01-08 주식회사 엘지생활건강 타이머 및 이를 구비하는 용기
EP3557334A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Uhrhemmungsmechanismus mit ruheanker, und uhr, die mit einem solchen hemmungsmechanismus ausgestattet ist
US11740589B2 (en) 2018-07-19 2023-08-29 Werner Janer Multi-cam, continuous-drive escapement mechanism
EP3901707B1 (de) * 2020-04-23 2024-02-28 ETA SA Manufacture Horlogère Suisse Hemmungsmechanismus einer uhr

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018796A2 (de) 1979-04-30 1980-11-12 George Daniels Uhren, Pendeluhren, Chronometer und Hemmungen dafür
EP1045297A1 (de) 1999-04-12 2000-10-18 Omega SA Koaxiale Ankerhemmung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834155A (en) * 1974-02-19 1974-09-10 Timex Corp Offset pallet lever for watch escapement
DE50115494D1 (de) * 2001-12-15 2010-07-08 Richemont Int Sa Konstantkraftvorrichtung
ATE443880T1 (de) * 2002-05-28 2009-10-15 Manuf Et Fabrique De Montres E Hemmung für uhren
DE50307083D1 (de) * 2003-09-22 2007-05-31 Paul Gerber Hemmung für Uhr
ATE363673T1 (de) * 2003-12-04 2007-06-15 Montres Breguet Sa Chronometerhemmung für armbanduhren
DE602005005632T2 (de) * 2005-03-30 2009-04-16 Montres Breguet S.A. Chronometerhemmung für Uhren
US7731415B2 (en) * 2005-07-04 2010-06-08 Montres Breguet Sa High-performance lever escapement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018796A2 (de) 1979-04-30 1980-11-12 George Daniels Uhren, Pendeluhren, Chronometer und Hemmungen dafür
EP1045297A1 (de) 1999-04-12 2000-10-18 Omega SA Koaxiale Ankerhemmung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Daniels, G., "La Montre: Principes et Methodes de Fabrication", 1993, Editions Scriptar SA, Lausanne, XP002468957.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120124797A1 (en) * 2007-12-27 2012-05-24 Chopard Technologies Sa Horological movement comprising a high oscillation frequency regulating device
US20120127836A1 (en) * 2007-12-27 2012-05-24 Chopard Technologies Sa Horological movement comprising a high oscillation frequency regulating device
US8628234B2 (en) * 2007-12-27 2014-01-14 Chopard Technologies Sa Horological movement comprising a high oscillation frequency regulating device
US8662741B2 (en) * 2007-12-27 2014-03-04 Chopard Technologies Sa Horological movement comprising a high oscillation frequency regulating device
US20120113764A1 (en) * 2010-11-04 2012-05-10 Nivarox-Far S.A. Synchronous escapement for a timepiece mechanism
US8439556B2 (en) * 2010-11-04 2013-05-14 Nivarox-Far S.A. Synchronous escapement for a timepiece mechanism
WO2013159117A1 (en) 2012-04-20 2013-10-24 SlipChip, LLC Fluidic devices and systems for sample preparation or autonomous analysis
US9808798B2 (en) 2012-04-20 2017-11-07 California Institute Of Technology Fluidic devices for biospecimen preservation
US9822356B2 (en) 2012-04-20 2017-11-21 California Institute Of Technology Fluidic devices and systems for sample preparation or autonomous analysis
US20180231936A1 (en) * 2015-08-25 2018-08-16 Citizen Watch Co., Ltd. Escapement for timepiece
US10534319B2 (en) * 2015-08-25 2020-01-14 Citizen Watch Co., Ltd. Escapement for timepiece

Also Published As

Publication number Publication date
EP1998236B1 (de) 2010-07-28
ATE475913T1 (de) 2010-08-15
CN101711378A (zh) 2010-05-19
SG148134A1 (en) 2008-12-31
HK1127969A1 (en) 2009-10-09
EP2156249A1 (de) 2010-02-24
EP1998236A1 (de) 2008-12-03
CN101711378B (zh) 2012-03-14
US20100182879A1 (en) 2010-07-22
US20080298180A1 (en) 2008-12-04
JP5221207B2 (ja) 2013-06-26
JP2008298774A (ja) 2008-12-11
DE602007008077D1 (de) 2010-09-09
US7661874B2 (en) 2010-02-16
JP5221649B2 (ja) 2013-06-26
KR20080106040A (ko) 2008-12-04
WO2008145539A1 (fr) 2008-12-04
HK1144020A1 (en) 2011-01-21
CN101334629B (zh) 2012-03-14
JP2010540886A (ja) 2010-12-24
EP2156249B1 (de) 2014-11-19
CN101334629A (zh) 2008-12-31

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